Ciao a tutti.
Ha un senso secondo voi dividere gli invii in blocchi da 150 e gestirli così?

Codice PHP:
        $query = "SELECT * FROM newsletter ORDER BY id ASC";
        $result = mysql_query($query, $db);
        while ($row = mysql_fetch_array($result)){
        $mail = $row[mail];
        $conf = $row[conferma];
        if($conf == "1" and $row[id] <= "150"){
        mail("$mail", "$oggettoinv", "$testoinv", "MIME-Version: 1.0\r\nContent-type: text/html; charset=iso-8859-1\r\nFrom: [email]newsletter@teatroartevita.com[/email]");
            }
        }
        sleep(10);
        
        while ($row = mysql_fetch_array($result)){
        $mail = $row[mail];
        $conf = $row[conferma];
        if($conf == "1" and $row[id] <= "300" and $row[id] >= "151"){
        mail("$mail", "$oggettoinv", "$testoinv", "MIME-Version: 1.0\r\nContent-type: text/html; charset=iso-8859-1\r\nFrom: [email]newsletter@teatroartevita.com[/email]");
            }
        }